December weather forecastArari, Brazil

Weather in December

December, the first month of the summer in Arari, is still a tropical month, with temperature in the range of an average low of 23.1°C (73.6°F) and an average high of 32.5°C (90.5°F).

Temperature

A minimal variation is noted in Arari's average high-temperature at the onset of December, reaching a still hot 32.5°C (90.5°F) from November's 34.1°C (93.4°F). An average nighttime temperature of 23.1°C (73.6°F) is witnessed in Arari throughout December.

Heat index

December's heat index is appraised at a burning hot 45°C (113°F). Watchful: Heat cramps and heat exhaustion are predicted. Continued exertion could lead to heatstroke.
Realize that the values for the heat index are set for shaded places and light winds. Being exposed to direct sunshine might trigger a heat index increase by 15 Fahrenheit (8 Celsius) degrees.
Note: The heat index, also known as 'real feel' or 'feels like', is a value derived by merging air temperature with the humidity to convey how the climate feels. This impact is subjective, influenced by the person's physical activity and individual heat perception, affected by factors including wind, attire, and metabolic differences. Awareness of direct sun exposure is crucial as it has the potential to heighten the weather's effects, pushing up the heat index by 15 Fahrenheit (8 Celsius) degrees. Heat index values are particularly meaningful for babies and toddlers. Youngsters generally face more threats than adults given their lesser ability to sweat. Coupled with their larger skin surface relative to their small bodies and higher heat production due to their activities, they are more endangered.
To prevent overheating and help regulate its internal temperature, the human body sweat and rely on the evaporation to cool down. Augmented relative humidity impedes typical body cooling mechanisms by lowering the evaporation rate, resulting in decreased body cooling and an amplified perception of heat. When heat gain surpasses the level the body can shed, body temperature begins to increase, and consequently, overheating and dehydration can occur, with varying severity.

Humidity

The average relative humidity in December in Arari, Brazil, is 78%.

Rainfall

In December, in Arari, the rain falls for 26.5 days. Throughout December, 133mm (5.24") of precipitation is accumulated. In Arari, during the entire year, the rain falls for 265.4 days and collects up to 1410mm (55.51") of precipitation.

Daylight

December has the longest days of the year, with an average of 12h and 18min of daylight.
On the first day of the month, sunrise is at 05:39 and sunset at 17:57. On the last day of December, in Arari, sunrise is at 05:52 and sunset at 18:11 -03.

Sunshine

In December, the average sunshine in Arari, Brazil, is 7.4h.

UV index

The months with the lowest UV index are January through April, June and December, with an average maximum UV index of 6. A UV Index estimate of 6 to 7 represents a high threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the maximum UV index of 6 suggests these recommendations:
Continue precautions and advocate sun safety advice. Deterrence of sunburn is indispensable. The Sun's UV radiation is most potent between 10 a.m. and 4 p.m. Try to limit direct exposure to the Sun during this period. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades.